TY  - GEN
T1  - The existential graphs of Charles Peirce
T2  - Approaches to semiotics
A1  - Roberts, Don D
LA  - English
PP  - The Hague
PB  - Mouton
YR  - 1973
UL  - http://buscaintegrada.pucsp.br/vufind/Record/18042
OP  - 168
CN  - 191.9 R643e
KW  - Peirce, Charles Sanders : 1839-1914
ER  -